It's similar to a small iPhone in that it can't make phone calls (though it can conduct FaceTime video chat) and only receives data over Wi-Fi. That means you won't have to pay for a data plan, but you won't be able to use it anyplace an iPhone would. It's designed for use on the go, when you don't want to be bothered with picking up the phone or checking your email.
However, since it can only download data over Wi-Fi, you'll need a Wi-Fi connection wherever you go. If you leave home without Internet access, you'll be out of luck. The same thing goes for places where there is no free Wi-Fi - you'd have to pay for that data too.
The iPod touch is not intended to be used as a full-time device. It's perfect for when you need to check your email or browse the web while on the go, but you shouldn't rely on it for important calls or texts. It's also limited in other ways, such as having only 16GB of storage space. If you save lots of videos or photos, this might not be enough for you.
All tablets may access the Internet via your home Wi-Fi network. This connection, like your home computer, does not require a cellular data plan and does not have an use cap (unless your Internet service provider caps your usage across your network). A data plan is necessary to view videos on YouTube and other media sites or download large files. However, you can watch videos and download files on Android tablets without a data plan if you use limited internet capacity providers such as NetZero or Blue Plan.
Tablets are also able to connect to a wireless network called a hotspot. Most hotels and many coffee shops have these networks available for free or a small charge. You can use your tablet in this way to log onto the Internet when you are out and about.
If you want to be able to make calls from your tablet or use it as a full-featured phone, you will need to subscribe to a data plan or pay extra for a roaming deal. Most people only need to access email and do basic web searching with their tablets so they don't need full voice and text messaging capabilities.
The iPod does not require a SIM card. Use just Wi-Fi. But if you want to use 3G or 4G LTE data on your trip, some carriers offer discounted rates for US customers if they will use only their cellular network and not their WiFi calling service.
1. FaceTime is compatible with any Wi-Fi-enabled device, including the iPhone 4 or later, iPad Pro (all models), iPad 2 or later, iPad mini (all models), and iPod touch 4th generation or later (only iPod touch 5th generation or later supports FaceTime audio calling).
Most tablets simply have a Wi-Fi chip and do not even allow you to connect to a cellular network. In order to access cell data, you'll also need to acquire a cellular data plan, just as you would with a smartphone. The only difference is that most carriers limit tablet users to 2GB per month, which is less than their smartphone counterpart.
If your tablet does not come with a cellular data plan, then you will need to purchase one. Most carriers offer discounted rates for those who want to limit themselves to certain amount of data per month, so be sure to check out the details before you buy anything. If you want to use the most up-to-date apps and download lots of content, then it's best to get at least the monthly equivalent of what a smartphone user gets for free. Of course if you only use 1GB or less, then you can get by with a special data pack designed specifically for tablets.
Tablet users tend to use their devices for entertainment rather than work, so they don't always need high speed data connections. However, since most tablets cannot handle wireless networks any slower than 11Mb/s, it's important to choose a plan that has enough bandwidth for your needs. If you download music, movies, and books regularly, then you will need at least 10MB per hour or 3G coverage wherever you are located.
A data connection is not supported by the iPod Touch. Unlike the iPhone and some iPads, which can connect to the Internet via mobile data networks, the iPod can only connect to the Internet over Wi-Fi. This means you won't be able to add iPod Touch support to your cell plan. However, since most wireless carriers now offer free data plans for those who pay for voice service, this shouldn't be an issue for most people.
IPads obviously have cellular data, but iPhones do not. At the end of the day, Apple does whatever it wants. If you want cellular data for your iPod, consider the Mifi, which is a portable wifi hotspot that you can connect your iPod to. It's $70 from Amazon.
Certain iPad models will be able to connect to a cellular data network. A SIM card must be able to be inserted into your iPad. Sign up for a plan that is suited with your needs. Once you've determined that your iPad is compatible with cellular data networks, you'll need to sign up for an iPad data plan. These plans vary depending on the carrier and range from $20 per month for 100MB of data to $200 for 5GB. If you want to use your iPad as a mobile phone then you'll also need to sign up for a voice plan.